Do you have any miles headcannons it can be angst or fluffy or a little bit of both. It's up to you
Haha. You gave me too much power. Also, I wasn't super sure if you meant general headcanons or, like, x reader kinda ones, so you get general hc's (if that's not what you wanted, I apologize and will write whatever it is you actually wanted lol). Anyways! On with the headcanons :D
TW: Angst, slight mentions of SH, mention of panic attack, mention of drugs, mention of sex
He absolutely adores the piano. I think it's canon that he at least knows how to play the piano, but I feel like he really likes it and kinda uses it as a stress reliever of sorts
I feel like he'd also just like the sound of a piano being played, which is what made him want to learn in the first place (The mental image of him serenading his lover by playing the piano. I ascend)
Personally, I feel like he's neurodivergent in some way, so when he gets really excited or happy, he stims in very subtle ways. Like, watch the scene where Miles is telling everyone to go to Tiger's race, and that's what I'm talking about
He's the type of friend that's there for his friends no matter what. He will drop everything just to help them if they need it
He is a little shit though and he will mess around with them and tease them if they do something stupid
I honestly feel like his mom is actually really supportive of him being gay and encourages him to wear what he wants and to do what he wants to do (y'all saw how she kept Simon from the party right? I know she said it was because he was spreading rumors about her son, but part of me feels like it's because she knew and didn't want him to be exposed)
In a modern AU, he's a Swiftie and also loves Lana Del Rey (but only specific songs). I take no critisism
I feel like he definitely had an attraction to Adam at one point, but then Nina showed an interest in Adam, and he backed off. Adam never knew that Miles liked him, and was confused as to why Miles started acting slightly differently when him and Nina got together
Miles did get over the attraction though, so it's not like he was heartbroken or anything
He ends up knowing a lot about cars after dating Tiger
I also feel like Tiger was his first actual relationship. Before Tiger, it was all just one-night stands
After the Tiger incident, he has trust issues
It takes him a while to fully trust someone again (especially in a romantic sense)
He's back to one-night stands and uses it as a coping mechanism
He also falls further into drugs for a while
We never see his dad in the movie, so I feel like he just kinda...left him and his mom, which really upset him when he was younger, but now he really doesn't care
He kinda went into a really dark place after the whole Tiger incident
Once he realized that he had no friends, he had a panic attack on the train and just cried the entire time
When the letters were first revealed, he briefly considered harming himself
If he ever does get a boyfriend again, I feel like he'd do his best to keep said boyfriend at arms length. He'd feel terrible for it, but he just wanted to protect himself
He misses his mom and his friends, and will cry himself to sleep sometimes because of how much he misses them and wishes he could see them all again
That's all I have! Sorry this took so long, I've been busy and swamped with work these last few days and I hate it lmao